The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2012
Filed:
Aug. 19, 2009
Yuichi Oneda, Tokyo, JP;
Yuichi Oneda, Tokyo, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A program obfuscation method includes: detecting a loop from an obfuscation target program; adding a conditional expression to the obfuscation target program at a preceding stage of the loop, wherein the conditional expression is neither permanently invalid nor permanently valid and adding a flow in which (a) when a logical value of the conditional expression is false, processing of the obfuscation target program proceeds to a start of the loop, and (b) when the logical value of the conditional expression is true, the processing executes a set of executable statements equivalent to a set of executable statements which are ones from the first executable statement to a middle executable statement among a plurality of executable statements in the loop, and then the processing proceeds to an executable statement subsequent to the middle executable statement in the loop.